Elevator-bucket



. (ModeL) W. G. AVERY.

ELEVATOR BUCKET. No. 392,532. Patented Nov. 6, 1888.

WITNESSES 7/ INVENTOR.

ATTORNEYJ,

ilnirrnn STATES arniu'r trick,

\VILLIAM G. AVERY, OF CLEVELAND, OHIO.

ELEVATOR BUCKET.

SPECIFICATION forming part of Letters Patent No. 392,532, dated November 6, 18188.

Application filed April 19,1887. Serial K021351370. (Modem T0 aZZ whom it may concern..-

Be it known that I, WILLIAM G. AVERY, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Elevator -Bnckets; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in elevator-buckets in which the bucket is made of sheet metal pressed orstamped substantially in halves and the two members thereof united approximately on the central plane of the bucket, the object being to provide a bucket of the stamped or pressed variety at agreatlyreduced initial cost. The pressed seamless bucket shown and described in United States Letters Patent No. 221,207, of November 4, 1879, is admitted to be of superior quality; but the initial cost of such bucket is so great as to preclude its use for many purposes. Such seamless buckets are made of a peculiar quality of steel, the cost of which is usually some thing more than double the cost of steel suitable for making my improved bucket. Two or more operations are required to draw or press the seamless bucket, necessitating the use of two or more expensive dies, respectively, for each operation, and requiring the work to be annealed between the different operations, and although such high priced material is usedlarge numbers-sometimes as high as thirty or forty per cent.of the buckets are ruined by reason of the metal being fractured in drawing the same in the dies. In view of these difficulties and for a cheap grade of buckets, I press the buckets substantially in halves and unite the two halves preferably by abutting and brazing the edges.

In the accompanying drawings, Figure 1 is an end elevation, and Fig. 2 is a rear side elevation, each showing buckets embodying my invention. Fig. 3 is an elevation in section of a die and plunger suitable for pressing the respective halves of the bucket.

To avoid the necessity of using expensive 1naterial-or,in other words, in order to make the bucket of almost any material of the wrought variety-I aim to draw the] metal as little as possible in the dies, and to do this the line of union should be lengthwise of the die and coincide as near as possible withthe central plane of the die, and as elevator-buckets are usually longer widthwise of the elevatorbelt to which they are attached, this line of union a is appproximately as shown in Fig. 1, although the long way of the bucket.is sometimes at right angles to the belt, as shown in Fig. .2, in which case the divisionline should be substantially as shown in Fig. 2. For most purposes the buckets should have rounded corners and rounded bottoms, although flat bot= toms and square corners, either or both, may be made, if so required; and where two or more varieties are being made-for instance, some with rounded corners and some with square corners, &c.the front half of the bucket might be of one variety and the rear half could be of another variety. Usually the one die and plunger answer for both halves of the bucket. After the metal has been drawn or shaped in the dies the edges will be more or less ragged, and these are dressed or sheared off to make a smooth edge for the bucket and to make theedges fit together.

For most purposes,and where the bucket is made of iron or steel, I abut the edges and braze them. Now it will be readily understood that sheet metal not having superior ductile and malleable qualities could be pressed, for instance, into the form of an ordinary tea-saucer, without liability of breaking or injuring the metal, whereas in pressing metal into the form of a teacup a large percentage of breakage might be expected even with metal having superior malleable and ductile qualities.

The dies for making my improved buckets in halves are usually set substantially as shown in Fig. 3, and usually one stroke of the plunger is sufficient to shape the half of the bucket. The cheap material that may be used in these buckets does not necessarily make the buckets less Valuable. Ordinarily the wear comes on the edge of the elevator-buckets, and the cheap material is likely to be as hard and wear as long as the more expensive material. I am therefore enabled to make a pressed bucket far superior to the ordinary piece bucket, and equally as serviceable for most purposes as the pressed seamless buckets and at a greatlyedges of which abut and are secured together reduced initial cost. Imay add that with most by brazing, whereby the smoothness of the piece buckets there is a great Waste of mateinterioris preserved, substantially as setforth. rial in blocking out the pieces; but with my In testimony whereof I sign, this specifica- 15 5 improved bucket the blanks, being usually tion, inthe presence of two witnesses, this 9th rectangular in form, are cut from metal sheets day of April, 1887.

with little or no waste, the ragged edges men- T tioned being the result of drawing the metal. ILLIAM AVERY What I claim is Witnesses: 10 An elevator-bucket consisting,essentially,of Guns. H. DORER,

two parts, substantially halves, the meeting ALBERT E. LYNCH. 

